<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
      <el-header>
        <div>
          <img src="../assets/1.jpg" alt="">
          <span>电商后台管理系统</span>
        </div>
          <el-button type='info' @click='logout'>退出</el-button>
      </el-header>
      <!-- 页面主体区域 -->
      <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? '60px' : '200px'" height="200px">
          <div class="toggle-button" @click="toggloCollapse">|||</div>
            <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
              <!-- 一级菜单 -->
              <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                <!-- 一级菜单模板区 -->
                <template slot="title">
                  <!-- 图标 -->
                  <i :class="iconsObj[item.id]"></i>
                  <!-- 文本 -->
                  <span>{{item.authName}}</span>
                  </template>

                <!-- 二级菜单 -->
              <el-menu-item :index="'/' + subItem.path + ''" v-for="subItem in item.children" :key="subItem.id" @click="savaNavState('/' + subItem.path)">
                <template slot="title">
                  <!-- 图标 -->
                  <i class="el-icon-menu"></i>
                  <!-- 文本 -->
                  <span>{{subItem.authName}}</span>
                </template>
              </el-menu-item>
              </el-submenu>
          </el-menu>
        </el-aside>
        <!-- 右侧内容主体 -->
        <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
        </el-main>
     </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian ',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
    methods: {
        logout() {
         window.sessionStorage.clear()
         this.$router.push('/login')
        },
        // 获取所有的菜单
        async getMenuList() {
         const { data: res } = await this.$http.get('menus')
         if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
         this.menulist = res.data
         // console.log(res)
        },
        // 点击按钮切换菜单折叠展开
        toggloCollapse() {
          this.isCollapse = !this.isCollapse
        },
        // 保存链接的激活状态
          savaNavState(activePath) {
            window.sessionStorage.setItem('activePath', activePath)
            this.activePath = activePath
          }
    }
}
</script>

<style lang="less" scoped>

.home-container{
  height: 845px;
}                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #ffff;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }

    img {
      width: 100px;
      border-radius: 100%;
    }
  }

}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}

.el-main{
  background-color: #eaedf1;
  max-height: 785px;
}

.iconfont{
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 15px;
  line-height: 24px;
  color: #ffff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>

